Volume 22, Number 12—December 2016
CME ACTIVITY - Synopsis
Investigation of and Response to 2 Plague Cases, Yosemite National Park, California, USA, 2015
Mary Danforth, Mark Novak, Jeannine Petersen, Paul S. Mead, Luke Kingry, Matthew Weinburke, Danielle Buttke, Gregory Hacker, James Tucker, Michael Niemela, Bryan Jackson, Kerry Padgett, Kelly Liebman, Duc Vugia, and Vicki L. Kramer
Table 4
Summary of Yersinia pestis–positive samples, Yosemite National Park, August 5–October 22, 2015*
| Location and date | Species | Sample type (titer or test) | Sequence identification no. |
|---|---|---|---|
| Crane Flat CG | |||
| Aug 5 | California ground squirrel | Serum (titer 1:64) | NA |
| Aug 5 |
California ground squirrel |
Flea pool (DFA, PCR, wgMSLT) |
CA15-3230 |
| Tuolumne Meadows | |||
| Aug 10 | Golden-mantled ground squirrel | Carcass (DFA, PCR, wgMSLT) | CA15-3265 |
| Aug 10 | Golden-mantled ground squirrel | Carcass (DFA, PCR, wgMSLT) | CA15-3266 |
| Aug 11 | Chipmunk (species unknown) | Carcass (PCR ) | NA |
| Aug 12 | Golden-mantled ground squirrel | Carcass (DFA, wgMSLT) | CA15-4410 |
| Aug 14 | Chipmunk (species unknown) | Carcass (DFA, culture) | NA |
| Aug 17 | Lodgepole chipmunk | Carcass (DFA, PCR, culture) | NA |
| Aug 26 | Douglas squirrel | Carcass (DFA, PCR, wgMSLT); flea pool (PCR ) | CA15-4491 |
| Aug 26 | Lodgepole chipmunk | Carcass (DFA, PCR, wgMLST); flea pool (PCR) | CA15-4493 |
| Aug 26 | Lodgepole chipmunk | Serum (1:1,024) | NA |
| Aug 26 | Lodgepole chipmunk | Serum (1:512) | NA |
| Aug 26 | Lodgepole chipmunk | Serum (1:128) | NA |
| Aug 26 | Deer mouse | Flea pool (PCR ) | NA |
| Sep 6 | Chipmunk (species unknown) | Carcass (PCR ) | NA |
| Sep 8 |
Chipmunk (species unknown) |
Carcass (PCR ) |
NA |
| Glacier Point | NA | ||
| Aug 25 | California ground squirrel | Serum (1:64) | NA |
| Aug 25 | Lodgepole chipmunk | Serum (1:128) | NA |
| Sep 24 |
Lodgepole chipmunk |
Serum (1:4,096) |
NA |
| Tamarack Flat CG | |||
| Aug 25 | California ground squirrel | Serum (1:128) | NA |
*Samples analyzed by wgMLST were cultured first. CG, campground; DFA, direct fluorescence antibody; NA, not applicable because sequencing was not performed; wgMLST, whole-genome multilocus sequence typing.
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Page updated: November 16, 2016
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